Harley Seals/Orings and Kits
Harley Bike Engine Seals, O-Rings & Kits at JJ Motorsports
Keep your Harley leak-free with premium Cometic seals and O-rings from JJ Motorsports, featuring Viton valve stem seals, pushrod tube O-rings, and crankcase seals for reliable performance on Twin Cam, Evo, Sportster, and Big Twin engines. These high-temp, oil-resistant components ensure perfect sealing and long-term durability.
Shop Cometic for race-proven quality. Explore related categories such as Harley engine for gaskets and rebuild kits, or Harley for cams and oil pumps to complete your engine refresh.
Top Harley Engine Seals & O-Rings
- Cometic Engine Crankcase Seal C9682 – High-quality main seal for Twin Cam and Evo crankcases; prevents oil leaks at the mainshaft.
- Cometic Valve Stem Seal Viton C9166 – Viton valve stem seals; heat- and oil-resistant for Big Twin and Sportster heads.
- Cometic Pushrod Tube O-Ring C9584 – Pushrod tube O-ring set; perfect seal between cylinder and rocker box on Evo and Twin Cam.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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JAMES GASKET Motor Gasket Kit - Twin Cam 17053-05-MLS
JAMES GASKET
$163.95A quality gasket kit is foundational to engine reliability—without proper sealing, you're risking oil leaks, coolant loss, and internal contamination that can derail performance and longevity. The JAMES GASKET Motor Gasket Kit for Twin Cam engines...09351091- SKU:
- 09351091
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- ENGINE
$163.95 -
JAMES GASKET Center Pushrod Cover O-Ring 11132-A
JAMES GASKET
$5.30A worn or damaged center pushrod cover gasket compromises engine sealing and can lead to costly oil leaks and contamination. The JAMES GASKET Center Pushrod Cover O-Ring maintains proper compression and prevents debris from infiltrating your engine's...09350115- SKU:
- 09350115
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- APPLICATION:
- PUSHROD TUBE
- UNITS:
- 10 PACK
- MATERIAL:
- VITON
- PRODUCT NAME:
- O-RING
$5.30 -
JAMES GASKET Derby Cover Seal - Twin Cam 25416-99-DL
JAMES GASKET
$19.95A worn or damaged derby cover seal will weep oil and compromise the appearance of your engine—this James gasket delivers a reliable, OEM-quality solution that eliminates leaks and restores a clean engine bay. Built with molded rubber and a beaded metal...09350090- SKU:
- 09350090
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- APPLICATION:
- DERBY COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- PRODUCT NAME:
- SEAL
$19.95 -
JAMES GASKET Main Drive Gear Seal 12067-A
JAMES GASKET
$10.95A leaking main drive gear seal doesn't just waste oil—it compromises engine protection and invites contamination that accelerates wear on critical drivetrain components. The JAMES GASKET Main Drive Gear Seal 12067-A delivers OEM-quality sealing...DS194088- SKU:
- DS194088
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- SEAL
- APPLICATION:
- TRANSMISSION
- UNITS:
- EACH
- APPLICATION:
- SPROCKET
- APPLICATION:
- MAINSHAFT
- RIDING STYLE:
- STREET
$10.95 -
JAMES GASKET Drain Plug O-Ring ST-11900045-10
JAMES GASKET
$2.95A failing drain plug o-ring is an easy way to develop slow, persistent oil leaks that compromise engine cleanliness and force you into frequent top-ups. The JAMES GASKET ST-11900045-10 delivers OEM-grade sealing performance with a design engineered...09351076- SKU:
- 09351076
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- 10 PACK
- APPLICATION:
- DRAIN PLUG
- PRODUCT NAME:
- O-RING
- RIDING STYLE:
- STREET
$2.95 -
JAMES GASKET Inner Primary Seal - Twin Cam 12052-A
JAMES GASKET
$18.10A leaking inner primary seal transforms a routine maintenance task into a costly engine rebuild. The JAMES GASKET Inner Primary Seal for Twin Cam engines stops seepage at the source, protecting your crankcase from oil loss and contamination while...09350121- SKU:
- 09350121
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- APPLICATION:
- INNER PRIMARY
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SEAL
- UNITS:
- 5 PACK
$18.10 -
JAMES GASKET Oil Pump Shaft Seal - XL/Big Twin 26227-58
JAMES GASKET
$18.70An oil pump shaft seal failure in your XL or Big Twin engine means catastrophic oil loss and potential engine seizure—and it's one of the most common wear points on Harley powerplants. The JAMES GASKET Oil Pump Shaft Seal replaces the OEM component with...DS194425- SKU:
- DS194425
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- APPLICATION:
- OIL PUMP
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
- PRODUCT NAME:
- SEAL
$18.70 -
JAMES GASKET Front Oil Pump O-Ring 10967
JAMES GASKET
$6.20A failing front oil pump O-ring doesn't just leak—it compromises your engine's lubrication system when you need it most. The JAMES GASKET Front Oil Pump O-Ring 10967 is engineered to seal tight under pressure, preventing oil loss that can lead to...09351086- SKU:
- 09351086
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- O-RING
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
- TYPE:
- OIL PUMP CAP
$6.20 -
JAMES GASKET Oil Pump Valve O-Ring 10971
JAMES GASKET
$5.20A properly functioning oil pump valve is critical to maintaining consistent oil pressure and protecting your engine's internal components from starvation and wear. This JAMES GASKET O-ring replacement ensures a reliable seal in your oil pump valve...09351088- SKU:
- 09351088
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- TYPE:
- OIL PUMP VALVE
- PRODUCT NAME:
- O-RING
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
$5.20 -
JAMES GASKET Oil Line O-Ring - Softail 11326
JAMES GASKET
$8.40Oil line O-rings are critical wear items that prevent leaks at connection points and maintain system pressure integrity. A failed or degraded O-ring compromises oil delivery, increases contamination risk, and can lead to catastrophic engine damage. The...09350281- SKU:
- 09350281
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- UNITS:
- 10 PACK
- APPLICATION:
- MOTOR
- APPLICATION:
- OIL LINE
- PRODUCT NAME:
- O-RING
$8.40 -
JAMES GASKET Interconnect Oil Seal 45359-00
JAMES GASKET
$20.30Prevent costly oil leakage and internal contamination with the JAMES GASKET Interconnect Oil Seal 45359-00, engineered to maintain pressure integrity across critical engine passages. This OEM-grade seal is essential for preserving hydraulic separation...09350252- SKU:
- 09350252
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- CHAIN GUIDE SUPPORT
- PRODUCT NAME:
- SEAL
- UNITS:
- 10 PACK
- APPLICATION:
- ENGINE BALANCER
- RIDING STYLE:
- STREET
$20.30 -
COMETIC Neutral Switch O-Ring C9642
COMETIC
$9.50A reliable neutral switch o-ring is critical for maintaining proper electrical continuity and preventing fuel leaks in your transmission system. The COMETIC C9642 is engineered with premium fuel-resistant elastomers that withstand extreme temperatures...09341389- SKU:
- 09341389
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- NEUTRAL GEAR SWITCH
- UNITS:
- 10 PACK
- MATERIAL:
- NITRILE RUBBER
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- O-RING
$9.50 -
COMETIC Rocker Breather Seal C9198
COMETIC
$9.40Crankcase pressure management directly impacts engine reliability and longevity. The COMETIC Rocker Breather Seal C9198 prevents oil seepage and maintains proper ventilation in your rocker cover assembly, eliminating messy leaks that compromise engine...09341397- SKU:
- 09341397
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SEAL
- APPLICATION:
- ROCKER COVER
- MATERIAL:
- SILICONE
- UNITS:
- PAIR
$9.40 -
On Sale
COMETIC Injector O-Ring C10205
COMETIC
Now: $8.00Was: $9.00Fuel injector o-rings are critical sealing components that prevent leaks at injector bungs, which can compromise fuel pressure, cause rough idle, and lead to costly engine damage. A degraded or worn o-ring will allow fuel to escape into the intake...09350994- SKU:
- 09350994
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- PRODUCT NAME:
- O-RING
- RIDING STYLE:
- STREET
- APPLICATION:
- FUEL INJECTOR
- UNITS:
- 10 PACK
Now: $8.00Was: $9.00Qty in Cart: 0Quantity:Price:Now: $8.00Was: $9.00Subtotal: -
On Sale
COMETIC Injector O-Ring C10206
COMETIC
Now: $8.00Was: $9.00Injector o-rings are critical sealing components that prevent fuel and coolant leaks at the injector body interface. A compromised o-ring can lead to fuel seepage, rough idle, and potential engine damage. The COMETIC Injector O-Ring C10206 delivers...09350995- SKU:
- 09350995
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- UNITS:
- 10 PACK
- PRODUCT NAME:
- O-RING
- RIDING STYLE:
- STREET
- APPLICATION:
- FUEL INJECTOR
Now: $8.00Was: $9.00 -
On Sale
COMETIC Air Cleaner Seal C10207
COMETIC
Now: $16.00Was: $17.10A properly sealed air cleaner isn't just about filtration—it's about preventing unmetered air from bypassing your filter and contaminating your fuel mixture with abrasive particles. The COMETIC Air Cleaner Seal C10207 delivers the precision fit and...09350996- SKU:
- 09350996
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- APPLICATION:
- AIR CLEANER
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- PRODUCT NAME:
- SEAL
Now: $16.00Was: $17.10 -
On Sale
COMETIC Seal C10209
COMETIC
Now: $15.00Was: $15.80Seal failures compromise engine integrity and can lead to costly leaks and performance degradation. The COMETIC Seal C10209 eliminates that risk with fuel-resistant construction designed to maintain a perfect seal under extreme operating conditions...09350998- SKU:
- 09350998
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- APPLICATION:
- CRANKCASE
- RIDING STYLE:
- STREET
- UNITS:
- 4 PACK
- PRODUCT NAME:
- SEAL
Now: $15.00Was: $15.80 -
On Sale
COMETIC O-Ring C10212
COMETIC
Now: $6.00Was: $6.80Proper sealing is non-negotiable in high-performance applications where pressure spikes and thermal cycling demand absolute reliability. The Cometic O-Ring C10212 delivers consistent, leak-free sealing across critical engine and drivetrain components...09351000- SKU:
- 09351000
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- PRODUCT NAME:
- O-RING
- APPLICATION:
- OIL LINE
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
Now: $6.00Was: $6.80 -
COMETIC Clutch Release Gear Seal C9364-1
COMETIC
$4.00The clutch release seal is a critical barrier against fluid contamination and leakage in your clutch hydraulic system. A worn or deteriorating seal compromises pressure consistency and can lead to engagement issues, slipping, and costly internal damage...09350827- SKU:
- 09350827
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- PRODUCT NAME:
- SEAL
- UNITS:
- EACH
- APPLICATION:
- RELEASE ROD
- MATERIAL:
- VITON
$4.00Qty in Cart: 0Quantity:Price:$4.00Subtotal: -
COMETIC Sprocket Shaft Seal C9366-1
COMETIC
$6.00Sprocket shaft seals are critical to preventing fluid leakage and contamination in high-performance engines where precision and reliability are non-negotiable. The COMETIC C9366-1 delivers the durability required for sustained racing applications without...09350829- SKU:
- 09350829
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- SPROCKET SHAFT
- PRODUCT NAME:
- SEAL
- UNITS:
- EACH
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
- TYPE:
- OIL
$6.00
Buying Guide and FAQs
Buying Guide: Factors to Consider When Choosing Harley Bike Engine Seals, O-Rings, and Kits
- Compatibility: Ensure seals and O-rings match your Harley's engine type (e.g., Big Twin, Twin Cam, Evo) and model specifics (e.g., FL/FLH, XL, Softail). Use the vehicle selector for year-specific fits (e.g., 1973-1983 for fork seals, 1990-up for drive gear seals) to prevent leaks or fit issues.
- Type of Use: For high-temperature or oil-exposed areas, opt for Viton seals for superior resistance; standard rebuilds benefit from nitrile or silicone O-rings for reliable sealing in street riding conditions.
- Components and Upgrades: Select individual seals (e.g., sprocket shaft, shifter lever) or packs (5-10 units); upgrade to fuel-resistant kits for comprehensive overhauls. Focus on materials that won't crack or become brittle.
- Brand and Quality: Choose James Gasket for top-quality seals like drive gear or solenoid types, or Cometic for premium Viton/silicone/nitrile options. Prioritize USA-made materials for durability and fuel resistance.
- Installation and Cost: Seals are straightforward replacements for DIY maintenance; prices range from $3.95 for individual seals to $35.95 for kits—factor in pack sizes (e.g., 5-10) and free shipping over $99 for value.
Frequently Asked Questions (FAQs)
- What Harley models and engines do these seals and O-rings support? Parts support Big Twin, Evo, Twin Cam, and models like FL/FLH, XL, Softail—use the year/make/model filter for compatibility, including specific applications like oil pump or fork seals.
- How do Viton seals improve performance? Viton offers high-temp and oil resistance, preventing leaks in critical areas like sprocket shafts or pushrod covers for reliable engine operation.
- What materials are used in seals and O-rings? Common materials include Viton (for oil/cranks), Nitrile Rubber (neutral switch), Silicone (rocker breather), ensuring fuel resistance without cracking.
- Are these sold in packs or individually? Many are in packs (5-10 units) for convenience in rebuilds; some like fork seal kits include everything needed for installation.
- What if a part doesn't fit my Harley? Verify application (e.g., shifter shaft, fuel filter) and year before buying. Our returns policy allows exchanges or refunds if it doesn't match.
- Can I find related engine parts? Yes—explore gaskets, pistons, or full rebuild kits in the Harley engine category to complement your seals and O-rings for a complete overhaul.
